Harvest pressure regulator valve system

Details Harvest pressure regulator valve system Harvest pressure regulator valve system

1987-09-08

1988-10-04

Tapoical, William E.

Refrigeration

Automatic control

Withdrawing or adding refrigerant from or to normally closed...

621963, 62278, 62352, F25C 510

Patent

active

047748150

ABSTRACT:
An ice making system having a compressor, a condenser and an evaporator, and having freeze and harvest cycles. During the harvest cycle, hot vaporous refrigerant is circulated from the compressor to the evaporator through a discharge line. The refrigerant is thereafter returned to the compressor through a supply line. To ensure that a predetermined amount of refrigerant is circulated between the compressor and the evaporator during the harvest cycle, a harvest pressure regulating valve automatically adds vaporous refrigerant to the supply line from the condenser when the pressure therein falls below a predetermined level.

REFERENCES:
patent: 2630685 (1953-03-01), Lewis
patent: 2876630 (1959-03-01), Boling
patent: 2960840 (1960-11-01), Hosken et al.
patent: 3213637 (1965-10-01), Halls
patent: 3280582 (1966-10-01), Knaebel
patent: 3332251 (1967-07-01), Watkins
patent: 3651657 (1972-03-01), Bottum
patent: 3838582 (1974-10-01), Redfern et al.
patent: 3903709 (1975-09-01), Anderson et al.
patent: 3922875 (1975-12-01), Morris, Jr.
Manitowoc Service Bulletin No.:SB-18-84; Dated 4/20/84 (Back page).

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